In this tutorial, we learn how to make a tennis ball sparkler bomb. You will need a tennis ball and four packs of sparklers to do this. Now, use scissors to cut a hole into the top of the tennis ball. After this, grab twelve crackers and push them inside of the ball. Next, grab the sparklers and grind them up into a plastic container. Crush these into a powder, then pour this into the tennis ball as well. To finish, place a fuse on the inside of the ball, then light it on fire. After this, run from the ball and watch it go off, enjoy!